If the roadmap can be trusted maybe that lens will be available by Q3.

I'd be mighty tempted to buy the NEX-7 if both that 'G' class standard zoom and a native ultra-wide zoom (or even an ultra-wide prime) were available. So far every CSC manufacturer comes up short in at least one of my requirements if I'm ever to ditch my 5D2 which fact is, if nothing else, good for my wallet.